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Finding the Fourth Proportional to 133,640,878.80, 200,461,318.20 and 65,616,430.80

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Solution

The fourth proportional to 133,640,878.80, 200,461,318.20 and 65,616,430.80 is: 98,424,646.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,640,878.80 : 200,461,318.20 = 65,616,430.80 : x
  2. Step 2: Convert to fraction form
    133,640,878.80/200,461,318.20 = 65,616,430.80/x
  3. Step 3: Cross multiply
    133,640,878.80x = 200,461,318.20 × 65,616,430.80
  4. Step 4: Simplify right side
    133,640,878.80x = 13,153,556,213,747,080
  5. Step 5: Solve for x
    x = 13,153,556,213,747,080/133,640,878.80
  6. Step 6: Final answer
    x = 98,424,646.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.